R&S SGT100A User Manual page 160

®
R&S SGT100A
"C/N or S/N"= ("E
●
"C/N or S/N" is the carrier/noise ratio
●
"E
●
"Bit Rate "f
●
B
Remote command:
[:SOURce<hw>]:AWGN:POWer:MODE
Reference Mode
Selects whether the carrier or the noise power is kept constant if the C/N or Eb/N0 ratio
is changed.
Remote command:
[:SOURce<hw>]:AWGN:POWer:RMODe
Bit Rate
Available only for "Mode > Additive Noise".
Indicates the bit rate used for converting C/N or S/N to E
Remote command:
[:SOURce<hw>]:AWGN:BRATe
Carrier/Noise Ratio / Signal/Noise Ratio
Available only for "Mode > Additive Noise" and "Mode > CW Interferer".
Sets the carrier/noise, signal/noise or respectively signal/interferer ratio.
Whether a configuration of C/N or S/N is enabled, depends on the selected output
play
●
For "Reference Mode > Carrier ", this entry determines the power of the output sig-
nal, i.e. the carrier + noise signal. It does not affect the power of the useful signal,
i.e. the carrier power remains constant.
●
For "Reference Mode > Noise ", this entry determines the power of the useful sig-
nal, i.e. the carrier power. The power of the output signal remains constant.
●
The power of the noise signal is derived from the entered C/N or S/N value and
displayed with the parameter "Noise Power" in the units of the useful signal.
●
The power of the useful signal is displayed with the parameter
nal Power
"Level" value in the "Status bar".
●
The power of the output signal is displayed under
Noise Power (System Bandwidth) / Carrier + Interferer Power / Signal + Interferer
Power
Remote command:
[:SOURce<hw>]:AWGN:CNRatio
E /N
b
Available only for "Mode > Additive Noise".
Sets the ratio of bit energy to noise power density.
User Manual 1176.8674.02 ─ 07
/N ")*(f /B
b 0 bit
/N " is the ratio of bit energy to noise power density.
b 0
= "Symbol Rate" x Modulation Value
bit
is the system bandwidth.
sys
Mode.
and can also be changed there. This indication corresponds to the
.
0
Additive White Gaussian Noise (AWGN) - Noise Generator
), where:
sys
on page 347
on page 348
on page 342
on page 344
Signal Generator Settings
/N .
b 0
Carrier Power / Sig-
Carrier + Noise Power / Signal +
Dis-
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